155511615050 has 24 divisors (see below), whose sum is σ = 315547205472. Its totient is φ = 56549678000.

The previous prime is 155511615047. The next prime is 155511615053. The reversal of 155511615050 is 50516115551.

155511615050 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155511615047) and next prime (155511615053).

It is a self number, because there is not a number n which added to its sum of digits gives 155511615050.

It is not an unprimeable number, because it can be changed into a prime (155511615053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141373646 + ... + 141374745.

It is an arithmetic number, because the mean of its divisors is an integer number (13147800228).

Almost surely, 2^155511615050 is an apocalyptic number.

155511615050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155511615050 is an abundant number, since it is smaller than the sum of its proper divisors (160035590422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155511615050 is a wasteful number, since it uses less digits than its factorization.

155511615050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282748414 (or 282748409 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 155511615050 in words is "one hundred fifty-five billion, five hundred eleven million, six hundred fifteen thousand, fifty".